Line Splitting for EdgeList and Adjacency Input Format

I tried to run GraphChi with the provided small netflix dataset ( http://graphlab.org/wp-content/uploads/2013/07/smallnetflix_mm.train_.gz ).
However, since there are two whitespaces between dst and value, the splitting did not work.
Therefore I changed the line splitter to be more generic by first trimming the line and then splitting along consecutive whitespaces such as spaces and tabs.